San Francisco Mortgage Calculator

Disclaimer: I am not a Real Estate professional or a tax expert. I put this calculator together in 1998 because I wanted to guesstimate how much I would really end up paying if I bought a house. As of 2006 (two homes and several refinances later) the numbers still hold. Send comments, corrections, etc. to me, Liz Warner.

May not be copied without permission.

Input: Explanation:
Home Price $
The median home price in San Francisco in April 2005 was $770,000 according to the San Francisco Chronicle. (Median means that half the homes sold for less, and half for more.)
Down Payment %
Note that a larger down payment can save you more than interest. It also affects the amount of private mortgage insurance (PMI) you may have to pay (see below).
Interest Rate %
You can find current interest rates all over the place, including here The calculator assumes a fixed-rate loan.
Loan Term years
Most home loans are for 30 years.

Homeowner's Insurance Rate (Annual) %
The average homeowner's insurance rate in CA is supposed to be about 37 percent of property value (but in my experience it's lower). I got that number mainly from this government site. (A list of ways to lower your insurance costs can be found here.)
Private Mortgage Insurance Rate %

The calculator will estimate this for you unless you check here to override and type in your own value.

Private mortgage insurance is usually required when your down payment is less than 20%. The percentage varies with the amount down. My numbers come from here. PMI isn't tax-deductible.
Property Tax Rate (Annual) %
Current San Francisco property tax rates can be found here.
Loan Points %
Points (fees paid to a lender) vary. If you know of a good source of general information about loan points, please drop me a line and I'll add a link.
Other Closing Costs %
Again, these vary. Let me know if you have a good source of detailed information on closing costs, and I'll add it.



Loan Amount $
Down Payment $
Non-Deductible Payments:
Monthly Private Mortgage Insurance Payment
$
Monthly Homeowner's Insurance Payment
$
(Partially) Deductible Payments:
Monthly Mortgage Payment
$
Monthly Property Taxes
$
Average Monthly Payment (Before Tax Deductions)
$
Total Paid Towards Principal During First Year (not counting down payment)
$

Total Paid Towards Interest During First Year
$

  • PMI and homeowner's insurance aren't tax-deductible for a property you live in, but (as I understand things) they are deductible for a property you own and rent out.
  • Mortgage interest and property taxes are deductible, in every case that I know about. (You do remember that I'm not a tax expert, right?)
  • Your out-of-pocket expenses will rise after the first year, because less of your mortgage payment will go towards interest. This means a smaller deduction.
  • Some up-front costs (like points) are tax-deductible in many cases.
Estimated Up-Front Costs (Downpayment, Loan Fees, Closing Costs)
$


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